Although such generalizations must always be made with cautions, differences in market structure - differing degrees of monopoly and competitiveness - have not usually been thought of central importance in their bearing on general price movement. It has been customary to assume broad homogeneity of product markets - the labour market is ordinarly treated as a special case - and the particular assumption have not be considered decisive for the analysis. Certainly in the Keynesian tradition market structures have been assigned a secondary role as compared with the aggregative relations of demand to the level of employment and the current capacity of the economy.
No takes yet. Share an insight, caveat, or question.
John Kenneth Galbraith (1957) studied this question.